A remarkably tiny, point-and-click drum machine that runs in your web browser. Everything is contained in a single HTML file. There is no build process, there are no dependencies, just open it in a browser and play around with it.
Demo site: https://patttf.github.io/Bea7s_/
Blackle Mori's online drumkit databender. Play around with the settings until you come up with a sample or pattern that you like and play it. Works a little bit like a tracker in that you can build pretty complex patterns - not just drum lines, probably entire songs.
An open-source drum machine and MIDI sequencer that also uses AI technology to figure out melodies for the patterns you program.